[rrd-users] Re: distributed rrd files

[Philip Molter]

On Wed, May 30, 2001 at 03:10:13PM +0200, rrd-users at gulu.net wrote:
: 
: Hallo.
: I have several machines collecting different rrd data.
: DEF:inoctets="scp some_host:/data/CPU.rrd /data/CPU.rrd"=/data/CPU.rrd:input:AVERAGE
: Maybe there should be a possibility to specify a number of seconds for
: if the file was modified less than this number of seconds ago the command
: should not be executed.
: 
: Tobi, is this possible?
: Are there other ways to solve this?

Tobi,

This would be a major RFE for us as well.  We're developing a
distributed system using RRD and the ability to use files off multiple
machines would be a big plus.  As for now, I think there are issues
with byte-ordering or system architecture, something that prevents one
from just transferring files and using them.  Rather than using
commands of some sort, I would recommend a URL-based schema of some
sort (easily parseable by existing libraries) and then a lightweight
RRD-specific daemon to handle the reading of the file.  As far as I can
tell, there's no reason to send the entire file back and forth over the
network if all you're doing is, say, graphing something specific.

krd, for now, what would probably work best is if you NFS mounted the
machines.  If they're all the same architecture/OS, it should work just
fine.

* Philip Molter
* DataFoundry.net
* http://www.datafoundry.net/
* philip at datafoundry.net

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